Introducing the 2019 Alpinestars SuperTech range. Alpinestars are a 50 year old icon in motorsports and actionsports. Alpinestars, the leader in technology, safety, performance, style. One Goal One Vision. Supertech is Alpinestars innovative new motocross apparel line, designed for superior racing performance. With a new performance design for an athletic fit, a chassis consisting entirely of advanced stretch mesh and an ultra-lightweight construction, the Supertech Jersey is Alpinestars lightest ever MX jersey.